you are not ruining anything .all rad's have holes at the end of the handlebar grips which are made for the purpose of mounting mirros .all you gotta do is remove the plastic end caps to mount some aftermarket mirros for a clean look. unlike handlebar mirrors which truly ruin the look of any bike.
went for the Thudbuster LT they have it on special now for $104 shipped. it's one the best ones out there for the money retail on it is $150. i will post pics when installed.